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  2. QAM (television) - Wikipedia

    en.wikipedia.org/wiki/QAM_(television)

    QAM is used in a variety of communications systems such as Dial-up modems and WiFi. In cable systems, a QAM tuner is linked to the cable in a manner that is equivalent to an ATSC tuner which is required to receive over-the-air (OTA) digital channels broadcast by local television stations when attached to an antenna. Most new HDTV digital ...

  3. DTV receiver - Wikipedia

    en.wikipedia.org/wiki/DTV_receiver

    A USB digital TV receiver with its antenna. A DTV receiver is a set-top box that permits the reception of digital television.Its components are very similar to a desktop PC. The DTV receiver is a vital link in the chain of television syste

  4. Digital television in the United States - Wikipedia

    en.wikipedia.org/wiki/Digital_television_in_the...

    Within a distance of 35 to 40 miles from the broadcast stations, it is possible that a simple antenna (such as "rabbit ears") may be adequate to receive a DTV broadcast signal OTA—at least some of the time for some of the channels. Any television equipped with an ATSC tuner may display DTV broadcasts properly.

  5. Television channel frequencies - Wikipedia

    en.wikipedia.org/wiki/Television_channel_frequencies

    VHF analog TV ceased in New Zealand on 1 December 2013. Channels 10 and 11 weren't added until the late 1980s (except Indonesia). VHF analog TV channel 1A is only used in Indonesia. VHF is currently no longer used for television in Indonesia (except in some regions until 2022) and only UHF is used for both analog and digital television, as in ...

  6. ATSC tuner - Wikipedia

    en.wikipedia.org/wiki/ATSC_tuner

    An ATSC (Advanced Television Systems Committee) tuner, often called an ATSC receiver or HDTV tuner, is a type of television tuner that allows reception of digital television (DTV) television channels that use ATSC standards, as transmitted by television stations in North America (including parts of Central America) and South Korea.

  7. Cable television - Wikipedia

    en.wikipedia.org/wiki/Cable_television

    Most cable companies require a set-top box (cable converter box) or a slot on one's TV set for conditional access module cards [2] to view their cable channels, even on newer televisions with digital cable QAM tuners, because most digital cable channels are now encrypted, or scrambled, to reduce cable service theft. A cable from the jack in the ...

  8. Quadrature amplitude modulation - Wikipedia

    en.wikipedia.org/wiki/Quadrature_amplitude...

    Analog QAM is used in: NTSC and PAL analog color television systems, where the I- and Q-signals carry the components of chroma (colour) information. The QAM carrier phase is recovered from a special colorburst transmitted at the beginning of each scan line. C-QUAM ("Compatible QAM") is used in AM stereo radio to carry the stereo difference ...

  9. High-definition television in the United States - Wikipedia

    en.wikipedia.org/wiki/High-definition_television...

    A separate tuner is required to receive HD satellite broadcasts. Cable television companies in the U.S. generally prefer to use 256-QAM to transmit HDTV. Many of the newer HDTVs with integrated digital tuners include support for decoding 256-QAM in addition to 8VSB for OTA digital. Cable television companies started carrying HDTV in 2003.